Filter attachment for centrifugal machines.



No. 630,365. Patented Allg. 8, |899.

U. LAPLACE.

FILTER ATTACHMENT FOR CENTBIFUGAL MADHINES.`

(Application med Jan. 5, 1899.)

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No. 630,365. Patented Aug. 8, |899.

u. LAPLACE.

FILTER ATTACHMENT FOR CENTBIFUGAL MACHINES.

(Application ld Jan. 5, 1899.)

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UNITED STATESV PATENT OFFICE.

ULYSSE LAPLACE, OF NEW ORLEANS, LOUISIANA.

FILTER ATTACHMENT FOR CENTRIFUGAL MACHINES.

SPECIFICATION forming part of Letters Patent No. 630,365, dated August 8, 1899.

Application led January 5 l1899. Serial No. 701,261. (No model.)

To ctZZ 1,071,071?, it may concern.-

Be it known that I, ULYSSE LAPLACE, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements in Centrifugal Machines,of which the following is a specification.V d

My invention relates to centrifugal machines and the application thereto of the principle of filtration of iuids by centrifugal force.

It consists of a filter attachment toa centrifugal machine, the said attachment being adapted to be placed in and removed from the rotary basket of an ordinary centrifugal machine and having for its purpose to remove all or almost all solid matter from uids. V

With the foregoing ends in view the invenf tion will be fully understood from the following description and claims when taken in conjunction with the annexed drawings, in which Figure 1 is a diametrical section of a centrifugal machine provided with my filter attachment. Fig. 2 is a section ofthe basket, taken in the plane indicated by the line 2 2 of Fig. 1. Fig. 3 is a sectional perspective view of a portion of my improved .attachment. Fig. 4 is an elevation of my improved attachment in the position it assumes `when removed from the basket of the centrifugal machine.

In the said drawings similar letters'designate corresponding parts in all of the several views, referring to which- A is the casing of an ordinary centrifugal machine, and B is a rotary basket arranged in the casing and xed on a central shaft C, j ournaled in the bottom thereof. The basket may be of the ordinary or any other suitable construction and is shown as comprising a bottom wall a, having a marginal flange b, a circular foraminated side wall c, arranged within and connected to the flange b of the bottom wall,an annular top wall d, having a depending marginal lian ge e surrounding and connected to the upper portion of the side wall c, and an inner circular wall f, of wiregauze, arranged within the wall c and suitably connected to the bottom wall a and top wall d. Y .Y

D is my improved lter attachment. This attachment in the preferred embodiment of the invention comprises lower and upper resilient strips g g', of steel or other suitable material, which have inwardly-directed apertured lugs 71, at suitable intervals, upright rods i, interposed between and connecting the lower and upper spring-strips, a filter-cloth j, arranged at one side of the frame formed by the resilient strips and connecting-rods and having its edge portions lapped over the resilient strips and provided with buttons j', and a lacejZ, which is arranged at the opposite side of the frame with respect to the cloth j and is carried to and fro between the upper and lower buttons j' after the manner shown in' Fig. 4, so as to hold the cloth on the frame. The resiliency of the strips g g causes the filter attachment to assume the straight position shown in Fig. 4, when the attachment is removed from the basket of the centrifugal machine. permits of the attachment being readily curved and placed in and removed from the basket and when the attachment is in the basket causes the same to hug the wall of the basket.

As before stated, the lower and upper por- `tions of the cloth j are lapped over the lower and upper strips g g', and hence it will be Seen that when the attachment is placed in the basket B and said strips are spread apart or moved toward the bottom wall a and top wall d the cloth will be clamped between them and said bottom and top walls in such inanner as to preclude the passage of juice between the cloth and walls. The pressing of the strips g g' against the bottom and top walls of the basket B also serves to fix the attachment in its circular position within the basket. When said strips are moved away from the walls of the basket, the attachment will be released and may then be readily removed from said basket for the purpose of cleansing the filter-cloth or for any other purpose.

In order that the strips g g may be readily moved toward and away from each other for the purposes described, I provide 4the Vapertures in the lugs h of one'strip withthreads disposed in one direction and the apertures in the lugs h of the other strip with threads disposed in the opposite direction. I also provide the connecting-rods z' with oppositely- Such resiliency of the strips also IOO 

